Faraday’s Law NEET Questions

Physics - Electromagnetic Induction and Alternating Currents

Faraday’s Law MCQ Questions


1.
Faraday’s first law of electromagnetic induction states that:
A.
Induced emf depends on resistance
B.
Induced emf is proportional to rate of change of flux
C.
Induced emf depends on coil length
D.
Induced emf is proportional to current
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ANSWER :
B. Induced emf is proportional to rate of change of flux
2.
According to Faraday’s second law, the induced emf is directly proportional to:
A.
Time interval of change in flux
B.
Magnetic field strength
C.
Rate of change of magnetic flux
D.
Voltage applied to the coil
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ANSWER :
C. Rate of change of magnetic flux
3.
If the magnetic flux through a coil changes at a rate of 2 Weber per second, the induced emf in a coil of 50 turns is

NEET - 2022

A.
50 V
B.
100 V
C.
25 V
D.
200 V
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ANSWER :
B. 100 V
4.
The SI unit of magnetic flux is:
A.
Tesla
B.
Weber
C.
Henry
D.
Gauss
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ANSWER :
B. Weber
5.
Which of the following factors affect the magnitude of the induced emf?
A.
Number of turns in the coil
B.
Speed of motion of the conductor
C.
Strength of the magnetic field
D.
All of the above
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ANSWER :
D. All of the above
6.
If the number of turns in a coil is doubled, the induced emf will:
A.
Remain the same
B.
Double
C.
Halve
D.
Increase four times
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ANSWER :
B. Double